Access Point password incorrect or it has a incompatible configuration.
2001
DNS resolution error. If you are using a custom DNS server, recheck its settings.
005 - Network Installation Management
2008
eShop download failed or invalid title ticket. Delete the ticket in FBI and install it from a legitimate source like the eShop or (if it's a cart dump) from the game's cartridge.
Error when attempting to access the eShop with a region-changed console. Change back to the original region or restore a NAND backup made before the change to fix.
2100
Connection to eShop timed out, often caused by slow download times.
eShop download failed or invalid title ticket. Delete the ticket in FBI and install it from a legitimate source like the eShop or (if it's a cart dump) from the game's cartridge.
Error when attempting to access the eShop with a region-changed console. Change back to the original region or restore a NAND backup made before the change to fix.
2705
Often caused by network timing out or losing connection with the eShop.
eShop download failed or invalid title ticket. Delete the ticket in FBI and install it from a legitimate source like the eShop or (if it's a cart dump) from the game's cartridge.
Tried to access the eShop with UNITINFO patch enabled. Turn it off in Luma's options.
2501
NNID is already linked to another system. Could be caused by a System Transfer (which transfers all associated NNID's, whether linked or not), restoring the Source System's NAND, and then attempting to use applications that require an NNID.
2511
System Update required (displayed by Miiverse).
2591
NNID is already linked to another system. Could be caused by a System Transfer (which transfers all associated NNID's, whether linked or not), restoring the Source System's NAND, and then attempting to use applications that require an NNID.
2613
Incorrect email or password when attempting to link an existing NNID. Can also happen if the NNID is already linked to a system, or when attempting to download a title from the eShop without having a linked NNID on the console.
2631
The NNID you are trying to use has been deleted or can't be used for a system transfer. A transferable NNID will only work on the target system.
The Internet Browser cannot confirm the security of the website. Note that the 3DS Internet Browser is fairly old and does not contain certificates for certain issuers, namely Let's Encrypt, so it may show this issue for some websites that work fine on a modern device.
090 - In-Game Specific Errors
0212
The game is permanently banned from Pokémon Global Link for using altered or illegal save data.
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